If you thought the XKR-S was as good as the big coupe could get, Jaguar would like you to consider the XKR-S GT.

Revealed at the New York Auto Show this week, the Jaguar XKR-S GT is a special new version of the already elite coupe, adding a host of new styling and handling tweaks.

Power remains unchanged at 405kW - courtesy of the big supercharged 5.0 litre V8 - but the GT adds a new body kit and a big new wing that generations 145kg of downforce.

The front-end gets a new carbon-fibre splitter, along with carbon winglets and wheel-arch extensions for improved air flow and superior brake cooling.

There's also additional venting in the bonnet, and a carbon fibre diffuser at the rear end.

Top speed remains unchanged at an electronically-limited 280km/h, but the 0-100km/h sprint time drops from 4.2 to 3.9 seconds.

Jaguar has worked its magic of every inch of the GT, blessing it with new suspension arms and uprights, wheel bearings and bushings, and sub-frame design - all developed as part of the new F-Type roadster program.

"Utilising race-car derived technology, all-aluminium construction and an uncompromised approach to aerodynamic efficiency, the result is a car as capable on the track as it is exhilarating on the road."

There's also track-inspired twin-rate springs and enhanced height-adjustable dampers, made 68 percent stiffer at the front and 25 percent stiffer at the rear.

The GT also gains carbon ceramic disc brakes, measuring 398mm at the front and 380mm at the rear.

In front of the big brakes is an even bigger set of wheels, featuring a unique 20-inch five-spoke design and wrapped in Pirelli Corsa rubber.